Why would somebody unlike something?

[BigHairyBugs]

I checked the graph on FB that shows activity, and in late May I had some likes and then some unlikes. What does that mean? I only post fun pictures of my drawings, and not all that often, so it's not like I'm sending out tons of postings. And if somebody liked something initially, why would they suddenly unlike it? Also, I think I lost one like out of my overall page likes. Why would that happen? I'm really confused!! Is there a way to find out who unliked something???

Here's my page: www.facebook.com/BigHairyBugs

Thanks!

[Former_Member]

The same thing happened to me! It's really sad that it happens after all this hard work... It's so not fair! I know for sure that somebody who did that - one of Etsy sellers (because I promote my fb fan page on Etsy only)! Somebody's playing games!!!! But it's ok, I believe in karma, they'll get what they give)
It just seems like social linking doesn't make any sense